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Introduction
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<H2 CLASS="section"><A NAME="htoc273">20.1</A>&nbsp;&nbsp;Introduction</H2>
ECL<SUP><I>i</I></SUP>PS<SUP><I>e</I></SUP>'s operating system interface consists of a collection of built-in
predicates and some global flags that are accessed with <A HREF="../bips/kernel/env/set_flag-2.html"><B>set_flag/2</B></A><A NAME="@default1097"></A>,
<A HREF="../bips/kernel/env/get_flag-2.html"><B>get_flag/2</B></A><A NAME="@default1098"></A> and <A HREF="../bips/kernel/env/env-0.html"><B>env/0</B></A><A NAME="@default1099"></A>. They are described in the following sections.
The interface is mostly compatible across Unix and Windows operating systems.<BR>
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